From: Gavin Sinclair <gsinclair@...>
Date: 2007-08-06T16:24:57+09:00
Subject: Re: Determining the common prefix for several strings

On Aug 3, 5:58 pm, Pe�a, Botp <b...@delmonte-phil.com> wrote:
>
> min = list.sort!{|a,b| a.size <=> b.size}.first
> break if list.all?{|a| a =~ /^#{min}/} while min.chop!
>

I just realised that the solution I just posted elsewhere in this
thread is very very similar to this one.

Be careful that using bang methods in chains is sometimes problematic,
as they can return nil if nothing changes (sort! doesn't have this
problem).  For interested readers, find the problem with this code:

  title = "the moon in june"
  title.downcase!.capitalize!

Cheers,
Gavin